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Finding the Fourth Proportional to 369,990.18, 510,601.05 and 208,850.94

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Solution

The fourth proportional to 369,990.18, 510,601.05 and 208,850.94 is: 288,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,990.18 : 510,601.05 = 208,850.94 : x
  2. Step 2: Convert to fraction form
    369,990.18/510,601.05 = 208,850.94/x
  3. Step 3: Cross multiply
    369,990.18x = 510,601.05 × 208,850.94
  4. Step 4: Simplify right side
    369,990.18x = 106,639,509,257.49
  5. Step 5: Solve for x
    x = 106,639,509,257.49/369,990.18
  6. Step 6: Final answer
    x = 288,222.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.